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Directions: Listen to Recording 1.3. Complete these extracts.I suppose I always had a ____(1)_____, and for me it seems to have been successful.They offered me full-time job, and then I worked my way up the ____(2)_____ from trader to associate to manager to director.It’s only been 17 years, but I’m going to take ____(3)_____ next year and buy a boat.

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Directions: Listen to Recordings 1.1-1.3, three people talking about their careers. Match them to where they are in their careers.

具有完善细胞器和典型核结构的微生物是

A. 细菌
B. 螺旋菌
C. 支原体
D. 真菌
E. 放线菌

创用牛痘预防天花的人是

A. 巴斯德(Pasteur L.)
B. 李斯德(Lister J.)
C. 郭霍(Koch R.)
D. 琴纳(Jenner)
E. 弗莱明(Fleming)

原核细胞型微生物最重要的特点是

A. 缺乏典型核结构
B. 单细胞
C. 细胞膜无类固醇
D. 严格细胞内寄生
E. 大多数不能人工培养

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